*{
	padding:0;
	margin:0;
}
.box{
	width:500px;
	margin:100px auto;

	button{
	border:0;
	width:51px;
	height:31px;
	outline:none;
	font:normal 14px/31px "黑体";
	background:url(../img/btn_bg.png) no-repeat 0 0;
	}
	.act{
		color:#fff;
		background:url(../img/btn2.png) no-repeat 0 0;
	}

}
